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Threshold SL10 Zoom

Threshold SL10

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SKU: ThresholdSL10
Threshold SL10, Nelson Pass vintage preamplifier with separate power supply
Active Circuit Data:

performance of basic gain stages. (measured to IHF standards A202 for distortion specifications).

preliminary phono gain stage:

(all measurements made at highest input impedance) FREQUENCY RESPONSE: .3 Hz through 500,000 Hz, +0, -3dB.

SQUARE WAVE RISE TIME: .5 microseconds.

TOTAL HARMONIC DISTORTION: .015% second harmonic @ 50 millivolts out .. 03% second harmonic @ 100 millivolts out, NOISE: (preliminary phono gain stage + RIAA gain stage): -80dB A weighted referenced to 1 volt out. - 72dB unweighted referenced to 1 volt out.

CROSSTALK: (left minus right) > -7OdB @ 1,000 Hz.

INPUT OVERLOAD: 70 millivolts peak for any frequency. INPUT IMPEDANCE: selectable 1 through 15 ohms, 15 through 30 ohms, 30 through 50 ohms.

RIAA phono gain stage:

RIAA EQUALIZATION: no greater than .5dB deviation at frequency extremes.

TOTAL HARMONIC DISTORTION: 012%. 20Hz through 20,000 Hz @ 2 volts out. typically: .008% @ 1.000 Hz.

SMPTE INTERMODULATION DISTORTION: .006% @ 1 volt out.

NOISE: -90dB A weighted referenced to 1 volt out. -75 dB unweighted referenced to 1ยท volt out.

CROSSTALK: (left minus right) -70 dB @ 1.000 Hz.

INPUT IMPEDANCE: 47.000 ohm and selectable 100 pI, 200 pf. or 400 pf.

INPUT OVERLOAD: 320 millivolt peak @ 1.000 Hz. OUTPUT IMPEDANCE (tape out): 1,000 ohms. GAIN FACTOR: +33dB @ 1,000 Hz.

High Level Gain Stage:

(performance of the basic gain stage outside the system) FREQUENCY RESPONSE: dc through 500,000 Hz. +0. -3dB. SQUARE WAVE RISE TIME: <.6 microseconds. PROPAGATION DELAY: input to output transit time: <.02 microseconds.

PHASE SHIFT: <10 degrees at 1,000,000 Hz. SLEW RATE: 150 volts/microsecond.

TOTAL HARMONIC DISTORTION: .003%, 20 Hz through 5,000 Hz .. 006%, 5,000 Hz through 20,000 Hz @ 5 volts out into 10,000 ohm, 1,000 pf load.

SMPTE INTERMODULATION DISTORTION: .008%, 10.000 Hz @ 5 volts out into 10,000 ohm, 1,000 pf load.

CROSSTALK: left channel to right channel; -6OdB @ 1,000 Hz. tuner to auxiliary; -65dB @ 1,000 Hz.

GAIN FACTOR: +2OdB.

MAXIMUM OUTPUT BEFORE CLIPPING: ::12 volts peak.

Dimensions:

Faceplate: 19 inches wide, 2.62 inches high.

Chassis: 17 inches wide, 2.215 inches high, 8 inches deep. Power supply: 8 inches wide. 3.375 inches high, 5 inches deep.

Availability: In stock

$1,500.00
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    Threshold SL10
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